Road structure – process – or apparatus – Apparatus – Means to agitate material
Patent
1984-05-29
1986-03-25
Novosad, Stephen J.
Road structure, process, or apparatus
Apparatus
Means to agitate material
404119, 425456, E01C 1940
Patent
active
045779945
ABSTRACT:
A device for screeding and finishing concrete pavements having an elongate sectional framework, turnbuckles between framework sections to provide a crown or sag, a rotating shaft with eccentric weights driven by an internal combustion engine to impart vibration, hydraulic pumps and motors driving winches for self-propulsion of the device across the concrete. The screed bars are hollow rectangular members having two useable wearing surfaces. The screed bars may be rotated to bring their second wearing surfaces into contact with the concrete.
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AWS Manufacturing, Inc., "The AWS Concrete Screed", copyright 1982, all pages.
H. Compton Co., "Texas Vibratory Straight Edge", copyright 1982, one page.
Allen Engineering Corp., "Allen Razorback Vibratory Air Screed", copyright 1979, all pages.
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Letchford John F.
Metal Forms Corporation
Novosad Stephen J.
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